Cradle to Gate
Identity ID
e049cf8f-392e-473c-ae0f-273a472a9f06
Materials
Associated ID
c55586bd-eaf0-40bb-afd3-41d81055288d
Included activities starts
Included activities ends
Description
The product represented by this dataset is gold, a high-purity elemental precious metal. It is golden-yellow in color, possesses extremely high ductility and toughness, and exhibits outstanding chemical stability, being resistant to corrosion and oxidation. It is a fundamental material and important strategic resource essential to the national economy, the defense industry, and the development of science and technology. This product is extracted through a halogen leaching process, with oxidized concentrate as the upstream feedstock. Downstream, it is mainly applied in jewelry processing and precious-metal value preservation and reserves, followed by electronics and electrical engineering (bonding gold wire, connectors, gold-plated layers), aerospace and precision instrument manufacturing, dental and medical applications, and chemical catalysis. High-purity gold and gold-based materials also play an irreplaceable and critical role in emerging low-carbon frontier technologies such as high-reliability microelectronic packaging, optoelectronic devices, and selective catalysis. The dataset includes the main raw and auxiliary materials, energy, and waste in the production process; infrastructure such as the manufacturing of production equipment and the construction of plants is not included within the dataset boundary. The data inventory is formed by merging data from multiple sources.
Activity Description
The entire production process includes the halogen leaching process, covering the process of obtaining gold from oxidized concentrate.
Process Description
Gold is a golden precious metal with extremely high ductility and toughness, outstanding chemical stability, and is not easily corroded and oxidized. It is considered a basic material and an important strategic resource necessary for the development of the national economy, defense industry, and science and technology. Gold is mainly used in jewelry and value-preserving reserves, followed by electronic and electrical fields (bonding gold wires, connectors, gold plating), aerospace and precision instruments, as well as dentistry and chemical catalysis. At the same time, high-purity gold and gold-based materials also play an irreplaceable key role in emerging low-carbon cutting-edge technologies such as highly reliable microelectronic packaging, optoelectronic devices and selective catalysis.
Time period
2023
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The oxidized concentrate is first sent to the halogen leaching reactor, where gold is leached with chlorine or bromine under acidic conditions to generate a gold-rich pregnant solution (PLS); the residue after leaching is separated and washed, and the washing liquid is recycled; the gold-rich pregnant solution is adsorbed on silica gel to recover gold, and the gold solid is obtained through filtration.